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Finding the Fourth Proportional to 375,741.80, 563,613.85 and 91,432.40

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Solution

The fourth proportional to 375,741.80, 563,613.85 and 91,432.40 is: 137,148.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,741.80 : 563,613.85 = 91,432.40 : x
  2. Step 2: Convert to fraction form
    375,741.80/563,613.85 = 91,432.40/x
  3. Step 3: Cross multiply
    375,741.80x = 563,613.85 × 91,432.40
  4. Step 4: Simplify right side
    375,741.80x = 51,532,565,798.29
  5. Step 5: Solve for x
    x = 51,532,565,798.29/375,741.80
  6. Step 6: Final answer
    x = 137,148.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.